Super Eagles defender, Kenneth Omeruo, has signed a new contract with Chelsea until 2020, the Premier League champions have announced on their official website.
However, Omeruo has joined Turkish side Kasimpasa on a season-long loan deal.
The 23-year-old was widely expected to depart Stamford Bridge permanently this summer, after spending four years out on loan, since signing for the Blues in 2012.
Omeruo has had loan spells at Dutch side ADO Den Haag, English Championship side Middlesbrough and Turkish sides, Kasimpasa and Alanyaspor.
He is yet to be featured by Chelsea in an official game, but made 26 appearances for Alanyaspor and scored one goal last term in the Turkish Super Lig topflight division.
Kasimpasa have picked up four points from their opening two league games this season, including a home draw with reigning champions Besiktas.